Insect controller

Abstract

An insect controller in which at least one volatile insecticidal or insect repellent compound that volatizes without heating is carried on a support with at least one through hole. The use of a volatile insecticidal or insect repellent compound without heating can ensure satisfactory insect-controlling effects. If a specific structure, e.g., folding structure, is employed for the insect controller, wasteful evaporation of the volatile insecticidal or insect repellent compound can be reduced during non-use.

What is claimed is:  
     
       1. An insect controller comprising a volatile insecticidal or insect repellant used without heating, which is carried on a support with a plurality of through holes, wherein the support further comprises a pair of plane members between which the support is sandwiched so that the support can be folded or unfolded by rotation of the plane members in opposite directions around a fixed axis on a plane or a side edge of the plane members, wherein the support has a ratio of surface area to volume ranging from 1 to 20 cm −1 , wherein the support is made of paper and has a honeycomb structure with polygonal through holes, and wherein the honeycomb structure is formed when the insect controller is open. 
     
     
       2. An insect controller according to claim  1 , wherein the vapor pressure of the volatile insecticidal or insect repellent compound at 20° C. is 1.0×10 −4  mmHg or higher. 
     
     
       3. An insect controller according to claim  1 , wherein the volatile insecticidal or insect repellent compound without heating is at least one selected from the group consisting of empenthrin, transfluthrin, 1-ethynyl-2-fluoro-2-pentenyl 3-(2,2-dichlorovinyl) -2,2 -dimethylcyclopropanecarboxylate, carane-3,4-diol, N,N-di-ethyl-m-toluamide and 1-methyl-n-propyl 2-(2-hydroxyethyl)-1-piperidinecarboxylate. 
     
     
       4. A method for controlling harmful insects, comprising putting an insect controller as set forth in claim  1  into such a state that the volatile insecticidal or insect repellent compound evaporates without heating, and then disposing the insect controller at a place where insect controlling effects are required, wherein wind does not blow directly against the insect controller. 
     
     
       5. An insect controller comprising a volatile insecticidal or insect repellant used without heating, which is carried on a support with a plurality of through holes, wherein the support further comprises a pair of plane members between which the support is sandwiched so that the support can be folded or unfolded by parallel movement of the plane members in the opposite direction, wherein the support has a ratio of surface area to volume ranging from 1 to 20 cm −1 , wherein the support is made of paper and has a honeycomb structure with polygonal through holes, and wherein the honeycomb structure is formed when the insect controller is open. 
     
     
       6. An insect controller according to claim  5 , wherein the volatile insecticidal or insect repellant compound used without heating is at least one selected from the group consisting of empenthrin, transfluthrin, 1-ethynyl-2-fluoro-2-pentenyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, carane-3,4-diol, N,N-di-ethyl-m-toluamide and 1-methyl-n-propyl 2-(2-hydroxyethyl)-1-piperidinecarboxylate. 
     
     
       7. A method of controlling insects by using an insect controller comprising support with a pair of plane members between which the support is sandwiched, comprising a steps of: 
       unfolding the support by moving the plane members in opposite directions; and  
       volatilizing an insect repellent located on the support without heating;  
       wherein the support comprises a plurality of through holes, wherein the support has a ratio of surface area to volume ranging from 1 to 20 cm −1 , wherein the support is made of paper and has a honeycomb structure with polygonal through holes, and wherein the honeycomb structure is formed when the insect controller is open.